| Irthlingborough to Torres Vedras | 1,003.92 mi (1,615.65 km) |
| Irthlingborough to Trancoso | 858.30 mi (1,381.31 km) |
| Irthlingborough to Trofa | 845.74 mi (1,361.08 km) |
| Irthlingborough to Vagos | 898.36 mi (1,445.76 km) |
| Irthlingborough to Valadares | 862.84 mi (1,388.60 km) |
| Irthlingborough to Valbom | 858.84 mi (1,382.16 km) |
| Irthlingborough to Vale de Cambra | 873.54 mi (1,405.83 km) |
| Irthlingborough to Valenca | 804.50 mi (1,294.71 km) |
| Irthlingborough to Valongo | 854.30 mi (1,374.86 km) |
| Irthlingborough to Vendas Novas | 1,014.56 mi (1,632.78 km) |
| Irthlingborough to Viana do Castelo | 828.68 mi (1,333.63 km) |
| Irthlingborough to Vieira do Minho | 818.25 mi (1,316.85 km) |
| Irthlingborough to Vila do Conde | 848.62 mi (1,365.72 km) |
| Irthlingborough to Vila Franca do Campo | 1,563.46 mi (2,516.15 km) |
| Irthlingborough to Vila Nova de Cerveira | 808.71 mi (1,301.50 km) |
